Features Good cooling: the optimized layout and heat dissipation design make the performance of the whole board more stable, and the MOS transistor with low switch-on resistance as a driver has a good heat dissipation effect. MOTOR DRIVER: On board the 4-way A4988 16-subdivision stepper motor driver board motor drive(2 motor interfaces on Z axis), 3-way PWM DC output (1 way for high current, 3-way for medium current, 2-way for small current). CONTROL BOARD: The highly integrated control motherboard solves the problem that the Ramps1.4 combination interface is cumbersome and prone to failure. Easy connection: can be directly connected to Ramps 1.4, 2004LCD control board and 12864LCD control board (no L-shaped adapter board, built-in). Power supply: adopt the ST original power chip, support a 12V-24V power supply with a USB interface, which provides stable operation and more convenient wiring. Specification: Item Type:3D Printer Motherboard Applicable model: For E12 3D printer Power input: 12V-24V, with USB interface. Connection: support for Ramps1.4, 2004 LCD and 12864 LCD control board Package list: 1 x 3D Printer Motherboard Package List 1 x 3D Printer Motherboard